Lock for folding-bracket joints



se,"n s, .1925. g 1,552,983.

H, F. w. HQBERG E1' A1.

LOCK FDR FOLDING BRACKET JOINTS Filed sem. 2o. 1923 2- ,suena-shaw:

' dunno/mfr sepa a, 1925. i 1,552,933`v H. F. W. HOBERG ET AL LOCK FORFOLDING BRACKET JOINTS Filed sept. 2o, 192e 2 's1-.urbana 2 M70/MfrPatented Sept. 8, 19251.

mismas UNITED STATES PATENT orifice.,

HENRY F. W. HOBERG- AND ARTHlllVE-l L. BETTS, F CINCINNATI, OHIO,ASSIGNORS T0 AUGUSTINE DAT/"HS, JR., 0F COVINGTON, KENTUCKY.

LOCK FOR FOLDTNG-BRACKET JOINTS.

Application filed September 20, 1923. Serial No. 663,756.

To all whom. 'it may concern.'

Be it known that we, Hanni F. 1W. Homeric and ARTHUR L. Bmrs, citizensof the United States, and both residents of Cincinnati, in the county ofHamilton and State of Ohio, have invented a new and useiul Lock forFolding-Bracket Joints, ci which the 'following is a specification.

The invention has to do with folding brackets or braces used to supporthinged closure. In the case ci' top-hinged doors ot bucket-boxes of tanktrucks there is no danger of the door falling it the bracket joint isarranged to break upwardly, but in that event the members of the bracketwhen folded stand above their pivot supports and a great deal of wear,lcoseness and rattling results 'from the vibration of the movement et'the vehicle. Mor ver in many instances dimensions do not permit oit thisarrangement.

The invention provides a lock for a bracket which tolds downwardly,which construction is not so subject to wear and rattle, but whichheretofore has given rise to some accidents through some one idly takinghold oil the bracket. The device is a spring-pressed pivoted bridgingpiece having jaws to embrace the joint, a bevel to canse the piece to beautomatically swung out ot the way as the door is raised and the jointstraightens, and a finger-hold Yfor disengaging the lock when the jointis to be broken and the door lowered. j

ln the accompanying drawings forming part hereof Fig. l is a side view,with part of the bucket-box in section and the hinged door open;

Fig. 2 is a similar view, with the door in closed position;

Fig. 3 is a plan. view on a larger scale ot the improved bracket joint;

Fig. 4 is a side view;

Fig. 5 is an end view, with one of the bracket members in section; and

Figs. 6 and 7 are views similar to Figs. 3 and 4 showing the position ofthe parts when the joint is being` straightened.

A bucket-box is indicated at l, and 2 is tance alongI the member o itstop-hinged door. rllhe folding` bracket comprises the members 3 and 4,pivoted respectively to the box and to the door and connected by thehinge joint 5, which folds downwardly.

The lock piece 6 is pivoted at one end to the member 4, a short distancefrom the hinge. The pivot 7 is at right angles to the hinge axis of thejoint, so that the lock piece swings laterally with respect to thejoint.

The lock piece is of such length as to project beyond the member 4 inthe folded condition (Fig. 2) and to extend for a disin the straightenedor supporting condition (Fig. 4), thereby bridging the joint. The piecehas a side wall 8 to bear against the inner side ot the bracket, abottom wall or jaw 9 to underlie the members oi the joint, and an upperjaw l0 to overlie the member A flat spring ll reveted to the member 4and bearing against the side oit the lock piece serves to snap thelatter into position and to hold it there.

The-j aw lO is beveled at l2 so as to canse the lock-piece to be forcedout of the way by reaction against the bottom of the member 3 when thejoint is straightened, the spring thereupon acting to snap the pieceinto locking position. The jaw 9 lies along the back or under side ofthe member 3 to which the locking piece is pivoted, so as to brace thelock on this member against pressure of the member 3 against the jaw 10at the upper or inner side of the joint in the flexing direction.

A linger-hold 13 projecting downward 'from the lock-piece enables thelock to be disengaged.

lVhat we claim as new is:

l. A lock for a folding bracket joint, comprising a spring-pressedpivoted piece formed to bridge and embrace the joint, said piece beingpiv'oted to one of the members of the joint to swing laterally andhaving a bevel to cause the piece to be swung out of the way by contactwith the other member as the joint straightens.

2. A lock as set forth in claim 1, characterized by the jaws 9 and 10 ofthe piece, the 3. A Ilook as set forth in claim l, further jaw 9V lyingagainst lthe back or under side characterized by the fact that thepivoted of the member 4 to which the piece is piece `is provided with adownwardly prol pivoted so as to brace the lock on this memjectingfinger-hold for disengagement of the 5 bei1 against pressure of themember 3 lock.

against the jaw l0 in the direotipn `of HENRY F. HQBERG. flexing. ARTHURBETTS.

